Synthesis of sulfonylurea derivatives and their α-glucosidase inhibitory activity

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Thi Thoi Bui Dai Quang Ngo Van Loc Tran


The paper describes the preparation of new sulfonylurea derivatives from sulfonyl carbamate 6 with amino derivatives. The process for synthesis of the key compound 6 included three steps starting from compound 6-chloronicotinic acid 1, which are readily available chemicals. The compound 1 in the presence of triethylamine in anhydrous acetone solvent and ethyl chloroformate to obtain 6-chloronicotinic (ethyl carbonic) anhydride compound 3. The compound 3 were subsequently reacted with compound 4 to obtain compounds 5. The sulfonamides 5 was refluxed with ethyl chloroformate in present anhydrous potassium carbonate in dry acetone to obtain the key compounds 6. The total yield of the key intermediate compound 6 is about 81.35%, related to the starting materials. Finally, three sulfonylurea derivatives 7a-c were synthesized by condensation of 6 with various of amines in toluene. Their structures have been determined by IR, MS and 1H and 13C NMR spectroscopic methods, and their α -glucosidase inhibitory activity have been evaluated.


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BUI, Thi Thoi; NGO, Dai Quang; TRAN, Van Loc. Synthesis of sulfonylurea derivatives and their α-glucosidase inhibitory activity. Vietnam Journal of Science, Technology and Engineering, [S.l.], v. 62, n. 2, p. 34-37, july 2020. ISSN 2525-2461. Available at: <>. Date accessed: 11 aug. 2020.